Air conditioning unit



FIG. 1 is a perspective view of an air conditioning unit showing my new desgin;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a side elevational view thereof the opposite side being a mirror image of that shown;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a rear elevational view thereof. 

The ornamental design for an air conditioning unit, as shown and described. 